Bellows valve



FIG. 1 is a top perspective view of a bellows valve showing our new design;

FIG. 2 is a side elevational view thereof, the opposite side being the same as the side shown;

FIG. 3 is an end elevational view thereof, the opposite end being the same as the end shown;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a bellows valve, as shown and described. 